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• Admin Edge Port — You can enable this option if an interface 
is attached to a LAN segment that is at the end of a bridged LAN 
or to an end node. Since end nodes cannot cause forwarding 
loops, they can pass directly through to the Spanning Tree 
forwarding state. Specifying Edge Ports provides quicker 
convergence for devices such as workstations or servers, 
retains the current forwarding database to reduce the amount 
of frame flooding required to rebuild address tables during 
reconfiguration events, does not cause the Spanning Tree to 
initiate reconfiguration when the interface changes state, and 
also overcomes other STP-related timeout problems. However, 
remember that Edge Port should only be enabled for ports 
connected to an end-node device.
• Migration — Re-checks the appropriate BPDU format to send 
on the selected interface. If at any time the switch detects STP 
BPDUs, including Configuration or Topology Change 
Notification BPDUs, it will automatically set the selected 
interface to forced STP-compatible mode. However, you can 
also check this Migration check box to manually re-check the 
appropriate BPDU format (RSTP or STP-compatible) to send on 
the selected interfaces.
• Trunk – Specifies if a port is member of a trunk.
b_mgmt.book  Page 68  Tuesday, July 8, 2003  5:24 PM